Most parts of the country are expected to receive significant rainfall in the next few days due to the prevalence of various rain-bearing weather systems, Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) weather specialist Benison Estareja said on Friday morning, Nov. 26.
Estareja said there is a slim chance of tropical cyclone formation until the end of November but three rain-inducing weather systems, namely the shear line, intertropical convergence zone (ITCZ), and northeast monsoon will likely prevail until the weekend.
Cloudy skies with scattered rain showers and thunderstorms may prevail over Batanes, Cagayan, Apayao, Isabela, Aurora, Quezon, Camarines Norte, Camarines Sur, and Catanduanes due to the shear line, also known as the tail-end of the frontal system.
The ITCZ, meanwhile, may bring cloudy skies with scattered rain showers and thunderstorms over Davao Region, Palawan, Basilan, Sulu, and Tawi-Tawi.
PAGASA advised those in these areas to stay vigilant against possible flash floods or landslides, especially during moderate to, at times, heavy rains.
The northeast monsoon, locally called "amihan," may also cause partly cloudy to cloudy skies with isolated light rains over Ilocos Region and the rest of Cordillera Administrative Region, Cagayan Valley, and Central Luzon.
PAGASA said mostly fair weather conditions may persist across the rest of the country.
Metro Manila and the rest of the country will have partly cloudy to cloudy skies with isolated rain showers due to localized thunderstorms or the ITCZ.
The State weather bureau, however, warned that severe thunderstorm activities could sometimes trigger flash floods or landslides.